package com.itheima.mapper;


import com.itheima.pojo.Dept;
import org.apache.ibatis.annotations.*;

import java.util.List;

@Mapper
public interface DeptMapper {


    @Select("select id, name, create_time, update_time from dept order by update_time desc")
    List<Dept> findAll();

    @Delete("delete from dept where id = #{id}")
    void deleteDeptById(Integer id);

    @Insert("insert into dept(name, create_time, update_time) values (#{name}, #{createTime}, #{updateTime})")
    void addDept(Dept dept);


    @Select("select id, name, create_time, update_time from dept where id = #{id}")
    Dept getById(Integer id);

    @Update("update dept set name = #{name} , update_time = #{updateTime}  where id = #{id}")
    void updateDept(Dept dept);
    @Select( "select count(*) from emp where dept_id = #{id}")
    int countDeptEmp(@Param( "id") Integer id);
}
